灯具分类和标识要求归纳.docx
4、灯具分类和标识要求根据防触电方式0 类灯具(Class 0 luminaire)依靠根本绝缘作为防触电保护的灯具。万一根本绝缘失效，防触电保护就只好依赖环境了。I 类灯具(Class I luminaire)灯具的防触电保护不仅依靠根本绝缘，而且还包括附加的平安措施，即把易触及的导电部件连接到固定线路中的保护接地导体上，使可触及的导电部件在万一根本绝缘失效时不致带电。II 类灯具(Class II luminaire)防触电保护不仅依靠根本绝缘，而且具有附加平安措施，如双重绝缘或加强绝缘，但没有保护接地的措施或依赖安装条件。III 类灯具 (Class III luminaire)所使用电源为平安特地电压(SELVsafety extra-low voltage),并且灯具内部不会产生高于SELV的电压。按防尘、防固体异物和防水等级IPxx灯具标识(Marking)要求：标识应清晰、耐久地标记在灯具上。文字最小高度为2mm,符号最小高度5mm。检验标识耐久性试验方法是，用浸水的布轻擦15秒，待晾干后，再用浸过汽油的布轻擦15秒，在完成耐久试验后再目视检查。在试验后，标记应字迹清楚，标贴不易脱落和不卷曲。金Z牌/标贴常见符号含义如下:AmperesFrequency (hertz)功率交流电VoltsWattsAC supplyDC supplyDC and AC supply .交用Class II .HU工作环境最大温度禁止使用冷光臬灯Rated maximum ambient temperature Warning against the use of cool-beam lamps . A刹被泵构最短距离Minimum distance from lighted objects(metres)近窗于H雄安就在黄.诵可第X*.表面Luminaires suitable for direct mounting onnormally flammable surfaces 不适宜于直接安城在普通可皓材。表面Luminaires suitable for direct mounting onnon-combustible surfaces only当隔热材料可靠住灯具时,灯具适次于安建在普通可第M料表面Luminaires suitable for direct mounting in/on 二normally flammable surfaces when thermallyinsulating material may cover the luminaire vOrdinaryIP20 No symbolDrip-proof Rain-proof Splash-proof IPX1 (One drop)IPX3 Lij (One drop in a square)“ (One drop in a triangle)Jet-proof Powerful waterjet-proof Water：ignt (immersible)京密<<)Pressure-watertight (submersible) IPX5 ZJLa (Two triangles with onedrop in each)IPX6 No symbc!IPX7 I i(Two drops)IPX8 61T (Two Greps lollov/d by anindication ci the maximumdepth of submers?onin metres)nfttt< Ftai体Protected against solid objects greater(han 2.5 mirProtected against solid objects greaterthan 1 mm IP3X No symbolDust-proofIP4X No symbolIP5X oo (A mesh without a frame)i：cDust-tight位用Use of heat resistant supply cables, inter-connecting cables or external wiringLuminaires designed for use withbowl mirror lampsIP6X oe (A mesh with a frame)t 三(The number of cores'- shown is optional)(Rectangular(Round)Rough service luminairesLuminaires for use with higl,产,lamps that require an external ignitor(Io tha lamp)Luminaires for use with high pressure sodiumlamps having an internal starting device it统立保Replace any cracked protective shield Luminaires designed for use with self-shieldedtungsten halogen lamps only 只*使用n.防炉加/m灯TOP
